2500+ Duplicate Symbols for architecture armv7 - X

问题:

I just got this interesting error by upgrading to Xcode 8. It worked fine in Xcode 7. However, in Xcode 8 it gives me a linker error:

ld: 2562 duplicate symbols for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Frameworks I'm using:

Frameworks search path:

$(PROJECT_DIR)/My\ App

Linker Flags: (Obj-C)

$(inherited)

I'm not using pods. I've just copied over the frameworks to the project directory.

回答1:

Xcode recommended to use warning flags and set GCC_NO_COMMON_BLOCKS to YES.

Setting it back to NO solved the problem!